268736556 has 48 divisors (see below), whose sum is σ = 686746368. Its totient is φ = 81115200.

The previous prime is 268736539. The next prime is 268736569. The reversal of 268736556 is 655637862.

It is a super-2 number, since 2×268736556² = 144438673061482272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30846 + ... + 38586.

It is an arithmetic number, because the mean of its divisors is an integer number (14307216).

Almost surely, 2^268736556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268736556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343373184).

268736556 is an abundant number, since it is smaller than the sum of its proper divisors (418009812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268736556 is a wasteful number, since it uses less digits than its factorization.

268736556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8022 (or 8020 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The square root of 268736556 is about 16393.1862674710. The cubic root of 268736556 is about 645.3206794309.

The spelling of 268736556 in words is "two hundred sixty-eight million, seven hundred thirty-six thousand, five hundred fifty-six".